Metal soil-pipe



(No Model.)

2 Sheets-sheet 1. R. G. BLACK. METAL SOIL PIPE.

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(No Model.

) 2 Sheets-Sheet 21.

R. C. BLACK.

METAL son. PIPE.

No. 465,749. Patented Dec. 22, 1891.

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l u f. l- V UNITED STATES PATENT erica.

ROBERT O. BLACK, OF ST. PAUL, MINNESOTA.

METAL SOIL-PIPE.

SPECIFICATION forming part of Letters Patent No. 465,749, dated December 22, 1891.

Application lecl December 18, 1890. Serial No. 375,063. (No model.)

To @ZZ whom 25 may concern:

Be it known that I, ROBERT C. BLACK, of Si. Paul, in the county of Ramsey and State of Minnesota, have invented a new and Improved Metal Soil-Pipe, of which the following is a full, clear, and exact description.

My invention relates to an improvement in soil-pipes, especially metal pipes, and has for its object to provide a pipe capable of being thoroughly, conveniently, and expeditiously cleaned, and in connection with which heavier rods and scrapers may be employed than-heretofore.

A further object of the invention is to so construct the pipe that accurate tests may be quickly and readily made.

The invention consists in the novel construction and combination ot' the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures and letters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of my improved pipe with the cover-plate removed from the cleaning-chamber. Fig. 2 is a longitudinal section through the pipe Von the line :c x of Fig.l with the plate in position. Fig. 3 is a transverse section on the line `y y of Fig. 2. Fig. 4L is a plan view of the cover-plate` detached. Figs. 5, 6, and 7 are detail views of the adjustable plug, and Fig. 8 is a longitudinal section through a modified form of the pipe. Fig. 9 is a sectional elevation of a building having all of its plumbing xtures in place and provided with my pipe A, having the cleaning-out chamber, to Which has b een applied the stopper A', and to the coverplate 16 of which chamber an air-pump is connected, so as to test for leakage without the necessity of removing any of the tub, sink, or closet fixtures.

The pipe A is provided with a hub 10 at one end, the opposite end being closed by a cap 11, which is cast or otherwise formed integral with the pipe. This cap is adapted to be removed after a test has been made and may then be utilized as aplug for the hub, as it neatly tits therein. In order that the cap may be readily detached, it is preferably strengthcned at its inner end by a rib, as shown in Figs. 1 and 2, and the metal in the pipe adjacent to the rib is reduced by forming an annular channel 12 therein.

Near the hub the body of the pipe is enlarged to practically correspond to its diameter, forming thereby a chamber 13, which I denominate a cleaning chamber. This chamber is provided with an opening 14 at its top or on one side surrounded by a horizontal flange l5, upon which a cover-plate 16 is adapted to rest, the said plate being bolted to the flange or secured thereto inany approved manner. The cover-plate is provided with an aperture 17, preferably located at or near the center, normally closed by a plugwhich is removed to receive a testing apparatus when a test is to be made.

An annular ilange 1S is formed in the pipe, which constitutes a partial partition between the hub and the cleaning-chamber, and serves also to limit the entrance of one pipe-section into another. The opposite end Wall of the chamber consists of a shoulder 19, as shown in Fig. 2.

A is an adjustable plug, (shown in detail in Figs. 5, 6, and 7,) and consisting in abodysection 20, a winged nut 21, and a disk 22. The body-section consists of a rod or barn having one conical extremity 23,-the opposite end 24E being threaded, and an intermediate enlarged portion 25, provided with an aperture 2G to receive a pin or other instrument, whereby the body-,section may be revolved.. The winged nut is screwed upon the threaded end of the body-section, and the disk in one face is provided with a cavity or socket 27 to receive the conical end of the body-section.

When a test is to be made requiring this plug A to be used, the disk 22'is made to engage with the wall 19 ot' the cleaning-chamber, and the nut 2l, connected with the bodysection, is placed in contact with the ilange 1S, andthe conical end of the body-section is introduced into the cavity 27 of the disk, as shown in dotted lines in Fig. 2. Then the stop-plug has been thus placed in position, the body-section is manipulated until the disk and nut bear closely against their rcspective supports.

In Fig. 8 I have shown a slightly-modied form of the pipe, in which the cleaning-cham- IOO ber is not as large in diameter as the hub and the adjustable plug is dispensed with, being substituted by a disk 28, which is cast in the pipe, the said disk being very thin at the edges to enable it to be readily displaced by a hammer or other instrument when its presence is not required. The cap 1I in this form of pipe may also be employed; but when the cap is employed the disk 2S need not be used unless especially desired.

The pipe is used,tested, and cleaned in the following manner: Where newly applied plumbing has been provided and before the lower pipe A has been connected with the terra-cotta sewer-pipes, which are outside of the building, one of the pipes-for instance, the one shown in Fig. S-either with the cap or with the disk, is used for the upper section or that section extending beyond the roof, or an ordinary pipe-section having a cap at one end may be used. For the last lower section, or the one extending through the wall of the building, the form of pipe shown in Figs. 1 and 2 is preferably employed, the chambered end of the pipe being located in a pit constructed beneath the cellar-Hoor. The plug is removed from the aperture 17 of the cover-plate and one end of an air-pipe is introduced therein. The pipes may now be readily tested by any amount of pressure, as the upper end of the line of pipe is closed and the lower end also. After the proper test has been made the cap of the upper pipe is broken off and may be employed to close one member of a Y-iitting located in the cellar, if such fitting is used, the other end of the member of the fitting being connected with the upright line of pipe. After the pump is removed the obstructions in the chamber of the lower pipe are taken out and the cover-plate issecured in position,the opening 17 therein being closed, and if the lower pipe is a capped one the cap is broken off and connections are made with the sewer or ground pipe.

It is evident that any obstructions in the pipe may be readily removed therefrom `through the medium of the lower pipe of the building, as the fall is in the direction of said chamber.

After the plumbing has been in use and the pipes become obstructed the cover-plate 16 of any section may be removed and a stout cleaning-rod inserted and worked back and forth in the pipe until the obstruction has been dislodged. Should it be necessary to test the piping after it has been in use, then the adjustable plug is inserted in the lower or soil pipe, as shown in dotted lines, Fig. 2, the top or roof pipe being plugged in any suit- 6o able manner.

Having thus described my invention, I claim as new and desire to secure byy Letters Patent- 1. A soil-pipe provided with a cleaningchamber having a lateral opening, a removable cover for said opening, provided with a threaded aperture for connection with a testpipe, a threaded plug for said aperture, and means for closing the bore of the pipe beyond said lateral opening, substantially as set forth.

2. A soil-pipe having a cleaning-chamber provided with annular shoulders at its ends and with a lateral opening, a removable cover having a threaded aperture for connection with a test-pi pe, a threaded plug for said aperture, and a removable plug in the chamber, consisting in the disk, the nut, and the bar threaded to engage the nut and bearing at its opposite end on the disk, substantially as set forth.

3. A pipe having an integral cylindrical plug-forming end cap 11 and an annular groove or weakened part, as shown at 12, at the juncture of the cap and pipe, whereby the cap may be Severed without breaking it and then serve as a plug, substantially as set forth.

4. A pipe having a cleaning-chamber provided with a removable cover having a threaded aperture for connection with a testpipe, a threaded plug for said aperture, an integral end cylindrical plug-forming cap closing one end of the pipe,and an annular groove or weakened part at the juncture of the cap and pipe.

5. In a soil-pipe, the combination, with a pipe having a cleaning-chamber formed near its hub end of essentially the'same diameter as theV hub and separated therefrom by a flange, and a removable and apertured cover fitted to the chamber, of a detachable plug adapted to close communication between the chamber and one end of the pipe, consisting of a body-section having one threaded eX- trelnity and a pivot extremity, a nut, and a disk having a cavity to receive the pivot end ofthe body-section, substantiallyas described.

G. A pipe having a cleaning-chamber 13, provided with a lateral opening Ill, and annular end shoulders 18 19,and integral cylindrical plug-forming end cap 11, an annular groove or weakened portion 12 at the juncture of the pipe and cap, and a cover for the Ioo IOS

IIO

opening 11l,having a screw-threaded opening 

